knx-listener/dist/deserializer.js

A thin client that creates a tunnel to knx gateway to listen to telegrams within knx net

"use strict";
function header(raw, pos) {
    const headerLength = raw.readUInt8(pos.next());
    const protocolVersion = raw.readUInt8(pos.next());
    const serviceId = raw.readUInt16BE(pos.next(2));
    const totalLength = raw.readUInt16BE(pos.next(2));
    if (headerLength !== 0x06) {
        throw new Error(`Invalid header length ${headerLength}`);
    }
    if (protocolVersion !== 0x10) {
        throw new Error(`Invalid protocol version ${protocolVersion}`);
    }
    if (raw.length !== totalLength) {
        throw new Error(`Invalid total length, expected ${raw.length}, but got ${totalLength}`);
    }
    return {
        serviceId,
    };
}
exports.header = header;
;
function channel(raw, pos) {
    const channelId = raw.readUInt8(pos.next());
    const status = raw.readUInt8(pos.next());
    if (channelId === 0) {
        throw new Error(`Invalid channel id ${channelId}`);
    }
    return {
        channelId, status,
    };
}
exports.channel = channel;
;
function hpai(raw, pos) {
    const size = raw.readUInt8(pos.next());
    if (size !== 0x8) {
        throw new Error(`Failed to read hpai at ${pos.cur}`);
    }
    const protocol = raw.readUInt8(pos.next());
    const ip = raw.readUIntBE(pos.next(4), 4);
    const port = raw.readInt16BE(pos.next(2));
    return {
        ip, port, protocol,
    };
}
exports.hpai = hpai;
;
function connectResponse(raw, pos) {
    const size = raw.readInt8(pos.next());
    const contype = raw.readInt8(pos.next());
    switch (contype) {
        case 4 /* Tunnel */: {
            if (size !== 0x4) {
                throw new Error(`Failed to read connect response for tunneling at ${pos.cur}`);
            }
            const knxAddress = raw.readUInt16BE(pos.next(2));
            return {
                connectionType: contype,
                knxAddress,
            };
        }
        default: throw new Error(`Unknown connection type ${contype}`);
    }
}
exports.connectResponse = connectResponse;
;
function seqnum(raw, pos) {
    const size = raw.readUInt8(pos.next());
    if (size !== 0x4) {
        throw new Error(`Failed to read structure at ${pos.cur}`);
    }
    const channelId = raw.readUInt8(pos.next());
    const seqn = raw.readInt8(pos.next());
    const status = raw.readUInt8(pos.next());
    return {
        channelId, seqn, status,
    };
}
exports.seqnum = seqnum;
;
function tunnelCemi(raw, pos) {
    pos.skip('messageCode');
    const additionalInfoLength = raw.readUInt8(pos.next());
    if (additionalInfoLength) {
        pos.skip('additionalInfo', additionalInfoLength);
    }
    pos.skip('controlField1');
    pos.skip('controlField2');
    const source = raw.readUInt16BE(pos.next(2));
    const dest = raw.readUInt16BE(pos.next(2));
    const npduLength = raw.readUInt8(pos.next());
    const apdu = raw.readUInt16BE(pos.next(2));
    const action = apdu & (128 /* GroupWrite */ |
        64 /* GroupResponse */ | 0 /* GroupRead */);
    if (action & (128 /* GroupWrite */ | 64 /* GroupResponse */)) {
        let data;
        if (npduLength > 1) {
            // data appended
            data = raw.subarray(pos.next(npduLength), pos.cur);
        }
        else {
            // data merged into 6 bits
            data = new Uint8Array([apdu & 0x3f]);
        }
        return {
            data, action, dest, source,
        };
    }
    else {
        // read
        return {
            action, dest, source,
        };
    }
}
exports.tunnelCemi = tunnelCemi;
;
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{\n  Connection,\n  BusEvent,\n} from './constants';\nimport {\n  SmartCursor,\n} from './utils/smart-cursor';\nimport {\n  Channel,\n  Header,\n  Hpai,\n} from './interfaces';\n\nexport function header(raw: Buffer, pos: SmartCursor): Header {\n  const headerLength = raw.readUInt8(pos.next());\n  const protocolVersion = raw.readUInt8(pos.next());\n  const serviceId = raw.readUInt16BE(pos.next(2));\n  const totalLength = raw.readUInt16BE(pos.next(2));\n  if (headerLength !== 0x06) {\n    throw new Error(`Invalid header length ${headerLength}`);\n  }\n  if (protocolVersion !== 0x10) {\n    throw new Error(`Invalid protocol version ${protocolVersion}`);\n  }\n  if (raw.length !== totalLength) {\n    throw new Error(`Invalid total length, expected ${raw.length}, but got ${totalLength}`);\n  }\n  return {\n    serviceId,\n  };\n};\n\nexport function channel(raw: Buffer, pos: SmartCursor): Channel {\n  const channelId = raw.readUInt8(pos.next());\n  const status = raw.readUInt8(pos.next());\n  if (channelId === 0) {\n    throw new Error(`Invalid channel id ${channelId}`);\n  }\n  return {\n    channelId, status,\n  };\n};\n\nexport function hpai(raw: Buffer, pos: SmartCursor): Hpai {\n  const size = raw.readUInt8(pos.next());\n  if (size !== 0x8) {\n    throw new Error(`Failed to read hpai at ${pos.cur}`);\n  }\n  const protocol = raw.readUInt8(pos.next());\n  const ip = raw.readUIntBE(pos.next(4), 4);\n  const port = raw.readInt16BE(pos.next(2));\n  return {\n    ip, port, protocol,\n  };\n};\n\nexport function connectResponse(raw: Buffer, pos: SmartCursor) {\n  const size = raw.readInt8(pos.next());\n  const contype = raw.readInt8(pos.next());\n  switch (contype) {\n    case Connection.Tunnel: {\n      if (size !== 0x4) {\n        throw new Error(`Failed to read connect response for tunneling at ${pos.cur}`);\n      }\n      const knxAddress = raw.readUInt16BE(pos.next(2));\n      return {\n        connectionType: contype,\n        knxAddress,\n      };\n    }\n    default: throw new Error(`Unknown connection type ${contype}`);\n  }\n};\n\nexport function seqnum(raw: Buffer, pos: SmartCursor) {\n  const size = raw.readUInt8(pos.next());\n  if (size !== 0x4) {\n    throw new Error(`Failed to read structure at ${pos.cur}`);\n  }\n  const channelId = raw.readUInt8(pos.next());\n  const seqn = raw.readInt8(pos.next());\n  const status = raw.readUInt8(pos.next());\n  return {\n    channelId, seqn, status,\n  };\n};\n\nexport function tunnelCemi(raw: Buffer, pos: SmartCursor) {\n  pos.skip('messageCode');\n  const additionalInfoLength = raw.readUInt8(pos.next());\n  if (additionalInfoLength) {\n    pos.skip('additionalInfo', additionalInfoLength);\n  }\n  pos.skip('controlField1');\n  pos.skip('controlField2');\n  const source = raw.readUInt16BE(pos.next(2));\n  const dest = raw.readUInt16BE(pos.next(2));\n  const npduLength = raw.readUInt8(pos.next());\n  const apdu = raw.readUInt16BE(pos.next(2));\n  const action = apdu & (BusEvent.GroupWrite |\n    BusEvent.GroupResponse | BusEvent.GroupRead);\n  if (action & (BusEvent.GroupWrite | BusEvent.GroupResponse)) {\n    let data: Uint8Array;\n    if (npduLength > 1) {\n      // data appended\n      data = raw.subarray(pos.next(npduLength), pos.cur);\n    } else {\n      // data merged into 6 bits\n      data = new Uint8Array([apdu & 0x3f]);\n    }\n    return {\n      data, action, dest, source,\n    };\n  } else {\n    // read\n    return {\n      action, dest, source,\n    };\n  }\n};\n"]}